So, what can viewers expect from the adaptation Bethan Robert’s 2012 novel of the same name? Filming on the film is now well underway, so The Argus has complied a handy guide to everything we know about the Amazon Studios production - My Policeman. Who is involved? Harry Styles filming My Policeman in Regency Square, Brighton Harry Styles, known for being of the most successful members of One Direction, will play Tom, the police officer of the title. The musician, 27, made his acting debut in Christopher Nolan’s 2017 war film Dunkirk and will star in Olivia Wilde’s psychological thriller Don’t Worry Darling.